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Inviscid to turbulent transition of trailing vorticesThe characteristics of the plateau region in the vortex system which trails from a lifting wing are discussed. The decay of the vortex due to viscous or turbulent shear is very slow in the plateau so that the maximum tangential speed in the vortices remains nearly constant for some distance downstream of roll-up and then begins to decrease, becoming inversely proportional to the square root of the distance downstream. Mathematical models are developed to analyze the structure of the plateau area. Solutions are obtained for both constant and variable eddy viscosity models.
Document ID
19750011100
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Iversen, J. D. (Iowa State Water Resources Research Inst. Ames, IA, United States)
Date Acquired
September 3, 2013
Publication Date
November 1, 1974
Subject Category
Aerodynamics
Report/Patent Number
ISU-ERI-AMES-74241
NASA-CR-142298
Accession Number
75N19172
Funding Number(s)
OTHER: NSG-2040
PROJECT: ERI PROJ. 1146-S
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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